If two variables reflect a perfect (1.0 or -1.0) correlation,
A) the body of the graph of the correlation will contain a straight line.
B) there will be no exception to the overall pattern of the relationship between variables.
C) the two "variables" are probably just two different indicators of the same variable.
D) all of the above

Question

Quizplus · Accepted Answer

A perfect correlation of 1.0 or -1.0 indicates that there is a strong linear relationship between the two variables. Therefore, (A) is true as a straight line would be the best fit for the data points. Also, (B) is true since a perfect correlation indicates that there are no exceptions or outliers to the pattern. Finally, (C) is also true because if two variables have a perfect correlation, they likely share a common underlying factor or are simply measuring the same thing in different ways.

If Two Variables Reflect a Perfect (1